/**
 * Copyright 2023 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import path from 'path';

import {getText} from '../httpUtil.js';

import {BrowserPlatform} from './types.js';

function archive(platform: BrowserPlatform, buildId: string): string {
  switch (platform) {
    case BrowserPlatform.LINUX:
      return 'chrome-linux';
    case BrowserPlatform.MAC_ARM:
    case BrowserPlatform.MAC:
      return 'chrome-mac';
    case BrowserPlatform.WIN32:
    case BrowserPlatform.WIN64:
      // Windows archive name changed at r591479.
      return parseInt(buildId, 10) > 591479 ? 'chrome-win' : 'chrome-win32';
  }
}

function folder(platform: BrowserPlatform): string {
  switch (platform) {
    case BrowserPlatform.LINUX:
      return 'Linux_x64';
    case BrowserPlatform.MAC_ARM:
      return 'Mac_Arm';
    case BrowserPlatform.MAC:
      return 'Mac';
    case BrowserPlatform.WIN32:
      return 'Win';
    case BrowserPlatform.WIN64:
      return 'Win_x64';
  }
}

export function resolveDownloadUrl(
  platform: BrowserPlatform,
  buildId: string,
  baseUrl = 'https://storage.googleapis.com/chromium-browser-snapshots'
): string {
  return `${baseUrl}/${resolveDownloadPath(platform, buildId).join('/')}`;
}

export function resolveDownloadPath(
  platform: BrowserPlatform,
  buildId: string
): string[] {
  return [folder(platform), buildId, `${archive(platform, buildId)}.zip`];
}

export function relativeExecutablePath(
  platform: BrowserPlatform,
  _buildId: string
): string {
  switch (platform) {
    case BrowserPlatform.MAC:
    case BrowserPlatform.MAC_ARM:
      return path.join(
        'chrome-mac',
        'Chromium.app',
        'Contents',
        'MacOS',
        'Chromium'
      );
    case BrowserPlatform.LINUX:
      return path.join('chrome-linux', 'chrome');
    case BrowserPlatform.WIN32:
    case BrowserPlatform.WIN64:
      return path.join('chrome-win', 'chrome.exe');
  }
}
export async function resolveBuildId(
  platform: BrowserPlatform
): Promise<string> {
  return await getText(
    new URL(
      `https://storage.googleapis.com/chromium-browser-snapshots/${folder(
        platform
      )}/LAST_CHANGE`
    )
  );
}
